How to create client and server app using node.js in firefox os.

I want to create a client and server app using node.js for firefox os. Please suggest me how to create a apps.
I want to send a request from client to server and based on client request, service reply to client.
If any links available, Please share it.
Thanks

Hi sb00349044,
The SUMO forums focuses on end-user support.
For questions about developing for Firefox OS, you will find better guidance in MDN, StackOverflow, and mailing lists:
* [https://developer.mozilla.org/en-US/Firefox_OS MDN - Firefox OS]
* [http://stackoverflow.com/questions/tagged/firefox-os StackOverflow - Firefox OS]
* [https://lists.mozilla.org/listinfo Mailing Lists at Mozilla]
Thanks,
- Ralph

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How to bulid client and server on differen machine

i want to build client on a sco unix machine and
server on a tandem unix machine.how can i complete it?
i made a test.the application is simple sample TOUPPER.
below is my ubbconifg
#ident     "@(#)apps:simpapp/ubbsimple     60.3"
#Skeleton UBBCONFIG file for the TUXEDO Simple Application.
#Replace the <bracketed> items with the appropriate values.
*RESOURCES
IPCKEY          50000
#Example:
#IPCKEY          123456
DOMAINID     simpapp
MASTER          simple
MAXACCESSERS     5
MAXSERVERS     5
MAXSERVICES     10
MODEL          MP
LDBAL          N
OPTIONS          LAN
*MACHINES
FSPSRB          LMID=simple
          TUXDIR="/db010/gdproj/tuxedo"
          APPDIR="/db010/home/tuxtest/gy"
          TUXCONFIG="/db010/home/tuxtest/gy/tuxconfig"
          UID=135
          GID=120
GDPSRB          LMID=simple2
TUXDIR="/appl/gdproj/tuxdev"
          APPDIR="/appl/home/gy/simple"
          TUXCONFIG="/appl/home/gy/simple/tuxconfig"
          UID=139
          GID=100
#DEFAULT:
#          APPDIR="/db010/home/tuxtest/gy"
#          TUXCONFIG="/db010/home/tuxtest/gy/tuxconfig"
#          TUXDIR="/db010/gdproj/tuxedo"
#Example:
#          APPDIR="/home/me/simpapp"
#          TUXCONFIG="/home/me/simpapp/tuxconfig"
#          TUXDIR="/usr/tuxedo"
#FSPSRB          LMID=simple
#Example:
#beatux          LMID=simple
*NETWORK
simple          NADDR="//10.194.0.3:9000"
NLSADDR="//10.194.0.3:9001"
          BRIDGE="/dev/tcp"
simple2          NADDR="//10.194.0.155:9000"
          NLSADDR="//10.194.0.155:9001"
BRIDGE="/dev/tcp"
*GROUPS
GROUP1
     LMID=simple     GRPNO=1     OPENINFO=NONE
*SERVERS
DEFAULT:
          CLOPT="-A"
simpserv     SRVGRP=GROUP1 SRVID=1
*SERVICES
TOUPPER
i start the tlisten at each site .
when i exec tmboot -y i can't get BBL at client site
below is the ULOG at server site
092248.FSPSRB!DBBL.5148: 081802: TUXEDO Version 6.4 IRIX 5.3 11091812 IP22 mips.
092248.FSPSRB!DBBL.5148: LIBTUX_CAT:262: INFO: Standard main starting
092250.FSPSRB!BBL.5149: 081802: TUXEDO Version 6.4 IRIX 5.3 11091812 IP22 mips.
092250.FSPSRB!BBL.5149: LIBTUX_CAT:262: INFO: Standard main starting
092252.FSPSRB!DBBL.5148: CMDTUX_CAT:4350: INFO: BBL started on simple - Release
6400
092253.FSPSRB!BRIDGE.5150: 081802: TUXEDO Version 6.4 IRIX 5.3 11091812 IP22
mips.
092253.FSPSRB!BRIDGE.5150: LIBTUX_CAT:262: INFO: Standard main starting
092253.FSPSRB!BRIDGE.5150: LIBTMIB_CAT:74: ERROR: Failed to advertise dynamic
/Admin service TBR0
092253.FSPSRB!BRIDGE.5150: CMDTUX_CAT:1788: WARN: Could not advertise administrative
service
092300.FSPSRB!DBBL.5148: LIBTUX_CAT:328: ERROR: No space in Bulletin Board for
Service Table
092300.FSPSRB!tmboot.5147: 081802: TUXEDO Version 6.4 IRIX 5.3 11091812 IP22
mips.
092300.FSPSRB!tmboot.5147: CMDTUX_CAT:825: ERROR: Process BBL at simple2 failed
with /T tperrno (TPENOENT - no entry found)
092300.FSPSRB!tmboot.5147: WARN: No BBL available on site simple2.
     Will not attempt to boot server processes on that site.
092300.FSPSRB!simpserv.5153: 081802: TUXEDO Version 6.4 IRIX 5.3 11091812 IP22
mips.
092300.FSPSRB!simpserv.5153: LIBTUX_CAT:262: INFO: Standard main starting
092300.FSPSRB!DBBL.5148: LIBTUX_CAT:328: ERROR: No space in Bulletin Board for
Service Table
092300.FSPSRB!simpserv.5153: LIBTUX_CAT:248: ERROR: System init function failed,
Uunixerr =
092300.FSPSRB!tmboot.5147: CMDTUX_CAT:825: ERROR: Process simpserv at simple failed
with /T tperrno (TPENOENT - no entry found)
below is the ULOG at client site
071457.GDPSRB!tmloadcf.15432: 081802: TUXEDO Version 6.4 IRIX 5.3 11091812 IP22
mips.
071457.GDPSRB!tmloadcf.15432: NLS:4: Cannot open message catalog CMDTUX_CAT, set
1, num 879; check TUXDIR=/appl/gdproj/tuxdev, LANG=chinese
071457.GDPSRB!tmloadcf.15432: NLS:4: Cannot open message catalog CMDTUX_CAT, set
1, num 871; check TUXDIR=/appl/gdproj/tuxdev, LANG=chinese
071457.GDPSRB!BSBRIDGE.15436: 081802: TUXEDO Version 6.4 IRIX 5.3 11091812 IP22
mips.
071457.GDPSRB!BSBRIDGE.15436: NLS:4: Cannot open message catalog LIBTUX_CAT, set
1, num 262; check TUXDIR=/appl/gdproj/tuxdev, LANG=chinese
071500.GDPSRB!BBL.15441: 081802: TUXEDO Version 6.4 IRIX 5.3 11091812 IP22 mips.
071500.GDPSRB!BBL.15441: NLS:4: Cannot open message catalog LIBTUX_CAT, set 1,
num 262; check TUXDIR=/appl/gdproj/tuxdev, LANG=chinese
071502.GDPSRB!BBL.15441: NLS:4: Cannot open message catalog LIBTUX_CAT, set 1,
num 248; check TUXDIR=/appl/gdproj/tuxdev, LANG=chinese
071502.GDPSRB!BBL.15441: NLS:4: Cannot open message catalog CMDTUX_CAT, set 1,
num 26; check TUXDIR=/appl/gdproj/tuxdev, LANG=chinese
i can set BRIDGE at each site.from the client ULOG ,i think
the "LIBTUX_CAT, set 1, num 248" is the reason BBL can't boot.
In reference manual LIBTUX_CAT 248 means "System init function faied".
what can i do at this time.Please help me.
If possible,please send me a exapmle.
thanks!!!
[email protected]

gongyu,
The problem is that your MAXSERVICES parameter is too low.
Increase it (say, to 100) and while you're at it, I would increase MAXSERVERS
and MAXACCESSERS too (Maybe 50 and 100 respectively)
Then your app. should boot.
There is no fundamental problem with what you're trying to do.
Regards,
Peter.
gongyu wrote:
i want to build client on a sco unix machine and
server on a tandem unix machine.how can i complete it?
i made a test.the application is simple sample TOUPPER.
below is my ubbconifg
#ident     "@(#)apps:simpapp/ubbsimple     60.3"
#Skeleton UBBCONFIG file for the TUXEDO Simple Application.
#Replace the <bracketed> items with the appropriate values.
*RESOURCES
IPCKEY          50000
#Example:
#IPCKEY          123456
DOMAINID     simpapp
MASTER          simple
MAXACCESSERS     5
MAXSERVERS     5
MAXSERVICES     10
MODEL          MP
LDBAL          N
OPTIONS          LAN
*MACHINES
FSPSRB          LMID=simple
          TUXDIR="/db010/gdproj/tuxedo"
          APPDIR="/db010/home/tuxtest/gy"
          TUXCONFIG="/db010/home/tuxtest/gy/tuxconfig"
          UID=135
          GID=120
GDPSRB          LMID=simple2
TUXDIR="/appl/gdproj/tuxdev"
          APPDIR="/appl/home/gy/simple"
          TUXCONFIG="/appl/home/gy/simple/tuxconfig"
          UID=139
          GID=100
#DEFAULT:
#          APPDIR="/db010/home/tuxtest/gy"
#          TUXCONFIG="/db010/home/tuxtest/gy/tuxconfig"
#          TUXDIR="/db010/gdproj/tuxedo"
#Example:
#          APPDIR="/home/me/simpapp"
#          TUXCONFIG="/home/me/simpapp/tuxconfig"
#          TUXDIR="/usr/tuxedo"
#FSPSRB          LMID=simple
#Example:
#beatux          LMID=simple
*NETWORK
simple          NADDR="//10.194.0.3:9000"
NLSADDR="//10.194.0.3:9001"
          BRIDGE="/dev/tcp"
simple2          NADDR="//10.194.0.155:9000"
          NLSADDR="//10.194.0.155:9001"
BRIDGE="/dev/tcp"
*GROUPS
GROUP1
     LMID=simple     GRPNO=1     OPENINFO=NONE
*SERVERS
DEFAULT:
          CLOPT="-A"
simpserv     SRVGRP=GROUP1 SRVID=1
*SERVICES
TOUPPER
i start the tlisten at each site .
when i exec tmboot -y i can't get BBL at client site
below is the ULOG at server site
092248.FSPSRB!DBBL.5148: 081802: TUXEDO Version 6.4 IRIX 5.3 11091812 IP22 mips.
092248.FSPSRB!DBBL.5148: LIBTUX_CAT:262: INFO: Standard main starting
092250.FSPSRB!BBL.5149: 081802: TUXEDO Version 6.4 IRIX 5.3 11091812 IP22 mips.
092250.FSPSRB!BBL.5149: LIBTUX_CAT:262: INFO: Standard main starting
092252.FSPSRB!DBBL.5148: CMDTUX_CAT:4350: INFO: BBL started on simple - Release
6400
092253.FSPSRB!BRIDGE.5150: 081802: TUXEDO Version 6.4 IRIX 5.3 11091812 IP22
mips.
092253.FSPSRB!BRIDGE.5150: LIBTUX_CAT:262: INFO: Standard main starting
092253.FSPSRB!BRIDGE.5150: LIBTMIB_CAT:74: ERROR: Failed to advertise dynamic
/Admin service TBR0
092253.FSPSRB!BRIDGE.5150: CMDTUX_CAT:1788: WARN: Could not advertise administrative
service
092300.FSPSRB!DBBL.5148: LIBTUX_CAT:328: ERROR: No space in Bulletin Board for
Service Table
092300.FSPSRB!tmboot.5147: 081802: TUXEDO Version 6.4 IRIX 5.3 11091812 IP22
mips.
092300.FSPSRB!tmboot.5147: CMDTUX_CAT:825: ERROR: Process BBL at simple2 failed
with /T tperrno (TPENOENT - no entry found)
092300.FSPSRB!tmboot.5147: WARN: No BBL available on site simple2.
     Will not attempt to boot server processes on that site.
092300.FSPSRB!simpserv.5153: 081802: TUXEDO Version 6.4 IRIX 5.3 11091812 IP22
mips.
092300.FSPSRB!simpserv.5153: LIBTUX_CAT:262: INFO: Standard main starting
092300.FSPSRB!DBBL.5148: LIBTUX_CAT:328: ERROR: No space in Bulletin Board for
Service Table
092300.FSPSRB!simpserv.5153: LIBTUX_CAT:248: ERROR: System init function failed,
Uunixerr =
092300.FSPSRB!tmboot.5147: CMDTUX_CAT:825: ERROR: Process simpserv at simple failed
with /T tperrno (TPENOENT - no entry found)
below is the ULOG at client site
071457.GDPSRB!tmloadcf.15432: 081802: TUXEDO Version 6.4 IRIX 5.3 11091812 IP22
mips.
071457.GDPSRB!tmloadcf.15432: NLS:4: Cannot open message catalog CMDTUX_CAT, set
1, num 879; check TUXDIR=/appl/gdproj/tuxdev, LANG=chinese
071457.GDPSRB!tmloadcf.15432: NLS:4: Cannot open message catalog CMDTUX_CAT, set
1, num 871; check TUXDIR=/appl/gdproj/tuxdev, LANG=chinese
071457.GDPSRB!BSBRIDGE.15436: 081802: TUXEDO Version 6.4 IRIX 5.3 11091812 IP22
mips.
071457.GDPSRB!BSBRIDGE.15436: NLS:4: Cannot open message catalog LIBTUX_CAT, set
1, num 262; check TUXDIR=/appl/gdproj/tuxdev, LANG=chinese
071500.GDPSRB!BBL.15441: 081802: TUXEDO Version 6.4 IRIX 5.3 11091812 IP22 mips.
071500.GDPSRB!BBL.15441: NLS:4: Cannot open message catalog LIBTUX_CAT, set 1,
num 262; check TUXDIR=/appl/gdproj/tuxdev, LANG=chinese
071502.GDPSRB!BBL.15441: NLS:4: Cannot open message catalog LIBTUX_CAT, set 1,
num 248; check TUXDIR=/appl/gdproj/tuxdev, LANG=chinese
071502.GDPSRB!BBL.15441: NLS:4: Cannot open message catalog CMDTUX_CAT, set 1,
num 26; check TUXDIR=/appl/gdproj/tuxdev, LANG=chinese
i can set BRIDGE at each site.from the client ULOG ,i think
the "LIBTUX_CAT, set 1, num 248" is the reason BBL can't boot.
In reference manual LIBTUX_CAT 248 means "System init function faied".
what can i do at this time.Please help me.
If possible,please send me a exapmle.
thanks!!!
[email protected]

Multiplayer game: how to synchronize client and server

Hi there, I'm wondering how to synchronzie client's and server's frame number?
I have a multiplayer spaceship(2D) game running at constant 30 FPS, since I use "frame number" to determine if a packet is too late or not, so I would like to have server and client both start frame 1 at the same time, but I have no idea how to do so, can anyone give me a hint?
well, if you want more details(may not be too much relevant to my problem, but any way, for anyone who interested):
I use UDP(my teammate implemented a TCP version, it's working but TCP is just way too stupid, lagging and some unknown problems produce very funny result). So far, on client side, input(key strokes) is sent via network immediately, but processed 2 frames later locally. So on lan, server will likely get the packet before it's time to process it, thus solve the packet delay problem a little bit).
Example: If user pressed fire button at frame 5, it's sent immediately to server, then at frame 7, client engine processes this "fire" event, and likely, server will get this packet at frame 6 or 7, then it can just processes it in time as well.
So there's a problem, server and client must both running the same frame number at the same time(maybe not exact, but gotta be very close).
By the way, I need some suggestions implementing the server, my brain hurts just thinking about it, I hope I will never have to code network stuff again: Server runs at 30FPS(but only broadcast game state at 6FPS), it just sit there between frame 1~4, get all packets and store them, then between frame 4~5, processes all the packets recieved, then broadcast the result(game state), client recieves it, will treat this game state as "correct game state for frame 5". I use this way because it solves packet delay and out of order packet to some extend.
However, say, if server broadcasts the game state for frame 5 at frame 5, then client is likely to recieve it at frame 7 or even later, how can client use it?
So, together, if you have suggestion or solution for my server and client implementation, please let me know, thanks heaps. I'm in quite a desperation at the moment.
P.S: I also posted this synchronizing problem at the socket programming forum, hope you guys (and girls) dont mind, since this is a place talking about game, that is a place talking about network, so I thought might be good to have suggestions from people in different programming area.

Why does the client need to have the same frame number as the server? I think a good way to do it would be as follows:
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How do you run emulator in 720p?? I don't see how
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Please Mark This As Answer if it helps to solve the issue Visakh ---------------------------- http://visakhm.blogspot.com/ https://www.facebook.com/VmBlogs

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http://www.oracle.com/technology/tech/dotnet/col/odt_faq.html#ORA-12154:_TNS:could_not_resolve_the

Hoe top create summary and detail report using ABAP QUERY

Hi ,
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Hi,
Table Declaration
tables:mara,mast.
*Declaring the internal table
data: begin of itab_new occurs 0,
      matnr like mara-matnr,     "Material No
      ernam like mara-ernam,     "Material Created by
      mtart like mara-mtart,     "Material Type
      matkl like mara-matkl,     "Material Desc
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Async tcp client and server. How can I determine that the client or the server is no longer available?

Hello. I would like to write async tcp client and server. I wrote this code but a have a problem, when I call the disconnect method on client or stop method on server. I can't identify that the client or the server is no longer connected.
I thought I will get an exception if the client or the server is not available but this is not happening.
private async void Process()
try
while (true)
var data = await this.Receive();
this.NewMessage.SafeInvoke(Encoding.ASCII.GetString(data));
catch (Exception exception)
How can I determine that the client or the server is no longer available?
Server
public class Server
private readonly Dictionary<IPEndPoint, TcpClient> clients = new Dictionary<IPEndPoint, TcpClient>();
private readonly List<CancellationTokenSource> cancellationTokens = new List<CancellationTokenSource>();
private TcpListener tcpListener;
private bool isStarted;
public event Action<string> NewMessage;
public async Task Start(int port)
this.tcpListener = TcpListener.Create(port);
this.tcpListener.Start();
this.isStarted = true;
while (this.isStarted)
var tcpClient = await this.tcpListener.AcceptTcpClientAsync();
var cts = new CancellationTokenSource();
this.cancellationTokens.Add(cts);
await Task.Factory.StartNew(() => this.Process(cts.Token, tcpClient), cts.Token, TaskCreationOptions.LongRunning, TaskScheduler.Default);
public void Stop()
this.isStarted = false;
foreach (var cancellationTokenSource in this.cancellationTokens)
cancellationTokenSource.Cancel();
foreach (var tcpClient in this.clients.Values)
tcpClient.GetStream().Close();
tcpClient.Close();
this.clients.Clear();
public async Task SendMessage(string message, IPEndPoint endPoint)
try
var tcpClient = this.clients[endPoint];
await this.Send(tcpClient.GetStream(), Encoding.ASCII.GetBytes(message));
catch (Exception exception)
private async Task Process(CancellationToken cancellationToken, TcpClient tcpClient)
try
var stream = tcpClient.GetStream();
this.clients.Add((IPEndPoint)tcpClient.Client.RemoteEndPoint, tcpClient);
while (!cancellationToken.IsCancellationRequested)
var data = await this.Receive(stream);
this.NewMessage.SafeInvoke(Encoding.ASCII.GetString(data));
catch (Exception exception)
private async Task Send(NetworkStream stream, byte[] buf)
await stream.WriteAsync(BitConverter.GetBytes(buf.Length), 0, 4);
await stream.WriteAsync(buf, 0, buf.Length);
private async Task<byte[]> Receive(NetworkStream stream)
var lengthBytes = new byte[4];
await stream.ReadAsync(lengthBytes, 0, 4);
var length = BitConverter.ToInt32(lengthBytes, 0);
var buf = new byte[length];
await stream.ReadAsync(buf, 0, buf.Length);
return buf;
Client
public class Client
private TcpClient tcpClient;
private NetworkStream stream;
public event Action<string> NewMessage;
public async void Connect(string host, int port)
try
this.tcpClient = new TcpClient();
await this.tcpClient.ConnectAsync(host, port);
this.stream = this.tcpClient.GetStream();
this.Process();
catch (Exception exception)
public void Disconnect()
try
this.stream.Close();
this.tcpClient.Close();
catch (Exception exception)
public async void SendMessage(string message)
try
await this.Send(Encoding.ASCII.GetBytes(message));
catch (Exception exception)
private async void Process()
try
while (true)
var data = await this.Receive();
this.NewMessage.SafeInvoke(Encoding.ASCII.GetString(data));
catch (Exception exception)
private async Task Send(byte[] buf)
await this.stream.WriteAsync(BitConverter.GetBytes(buf.Length), 0, 4);
await this.stream.WriteAsync(buf, 0, buf.Length);
private async Task<byte[]> Receive()
var lengthBytes = new byte[4];
await this.stream.ReadAsync(lengthBytes, 0, 4);
var length = BitConverter.ToInt32(lengthBytes, 0);
var buf = new byte[length];
await this.stream.ReadAsync(buf, 0, buf.Length);
return buf;

Hi,
Have you debug these two applications? Does it go into the catch exception block when you close the client or the server?
According to my test, it will throw an exception when the client or the server is closed, just log the exception message in the catch block and then you'll get it:
private async void Process()
try
while (true)
var data = await this.Receive();
this.NewMessage.Invoke(Encoding.ASCII.GetString(data));
catch (Exception exception)
Console.WriteLine(exception.Message);
Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host.
By the way, I don't know what the SafeInvoke method is, it may be an extension method, right? I used Invoke instead to test it.
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hi,
I am new to socket programming. I am following the tutorial of sun for socket programming...The link is
http://java.sun.com/docs/books/tutorial/networking/datagrams/clientServer.html
I have understood the concept, but the problem is i cannot run the program. I am using netbeans and i have created a package and stored the files QuoteServer,QuoteServerThread, QuoteClient in this package. How can i make the server program run first and then client program in netbeans
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No need to use 2 seperate computers. I've done it one computer before without a problem.
Nick

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